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Cell viability of LB20a (REV1) and PAY01a (rev1) strains without expression of TDG (A) and with expression of TDG (B). Cells were transferred to medium containing galactose to induce expression from pYES3-TDG and sampled at various times after for viability as determined by the exclusion of the vital dye trypan blue, as described in Materials and methods. The values shown are the means of three independent determinations, with standard deviations indicated by the error bars.
